Vulnerability-Lookup

CNVD-2019-38495

Vulnerability from cnvd - Published: 2019-11-01

Title

Avast antivirus和AVG antivirus DLL劫持漏洞

Description

Avast Antivirus是捷克爱维士（Avast）公司的一套杀毒软件。AVG AntiVirus是一款防病毒和反后门的杀毒软件。Avira Antivirus engine是德国小红伞（Avira）公司的一款杀毒引擎。 Avast antivirus和AVG antivirus存在DLL劫持漏洞，攻击者可利用该漏洞加载恶意DLL文件来绕过防御和提升特权。

Severity

中

Patch Name

Avast antivirus和AVG antivirus DLL劫持漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://www.avast.com

Reference

https://securityaffairs.co/wordpress/92882/hacking/dll-hijacking-issues-avast-avg-avira.html

Impacted products

Name
['Avast Antivirus <19.8', 'Avast AVG antivirus <19.8']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-17093"
    }
  },
  "description": "Avast Antivirus\u662f\u6377\u514b\u7231\u7ef4\u58eb\uff08Avast\uff09\u516c\u53f8\u7684\u4e00\u5957\u6740\u6bd2\u8f6f\u4ef6\u3002AVG AntiVirus\u662f\u4e00\u6b3e\u9632\u75c5\u6bd2\u548c\u53cd\u540e\u95e8\u7684\u6740\u6bd2\u8f6f\u4ef6\u3002Avira Antivirus engine\u662f\u5fb7\u56fd\u5c0f\u7ea2\u4f1e\uff08Avira\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u6740\u6bd2\u5f15\u64ce\u3002\n\nAvast antivirus\u548cAVG antivirus\u5b58\u5728DLL\u52ab\u6301\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u52a0\u8f7d\u6076\u610fDLL\u6587\u4ef6\u6765\u7ed5\u8fc7\u9632\u5fa1\u548c\u63d0\u5347\u7279\u6743\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://www.avast.com",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-38495",
  "openTime": "2019-11-01",
  "patchDescription": "Avast Antivirus\u662f\u6377\u514b\u7231\u7ef4\u58eb\uff08Avast\uff09\u516c\u53f8\u7684\u4e00\u5957\u6740\u6bd2\u8f6f\u4ef6\u3002AVG AntiVirus\u662f\u4e00\u6b3e\u9632\u75c5\u6bd2\u548c\u53cd\u540e\u95e8\u7684\u6740\u6bd2\u8f6f\u4ef6\u3002Avira Antivirus engine\u662f\u5fb7\u56fd\u5c0f\u7ea2\u4f1e\uff08Avira\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u6740\u6bd2\u5f15\u64ce\u3002\r\n\r\nAvast antivirus\u548cAVG antivirus\u5b58\u5728DLL\u52ab\u6301\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u52a0\u8f7d\u6076\u610fDLL\u6587\u4ef6\u6765\u7ed5\u8fc7\u9632\u5fa1\u548c\u63d0\u5347\u7279\u6743\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Avast antivirus\u548cAVG antivirus DLL\u52ab\u6301\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Avast Antivirus \u003c19.8",
      "Avast AVG antivirus \u003c19.8"
    ]
  },
  "referenceLink": "https://securityaffairs.co/wordpress/92882/hacking/dll-hijacking-issues-avast-avg-avira.html",
  "serverity": "\u4e2d",
  "submitTime": "2019-10-24",
  "title": "Avast antivirus\u548cAVG antivirus DLL\u52ab\u6301\u6f0f\u6d1e"
}

CVE-2019-17093 (GCVE-0-2019-17093)

Vulnerability from cvelistv5 – Published: 2019-10-23 16:59 – Updated: 2024-08-05 01:33

Summary

An issue was discovered in Avast antivirus before 19.8 and AVG antivirus before 19.8. A DLL Preloading vulnerability allows an attacker to implant %WINDIR%\system32\wbemcomn.dll, which is loaded into a protected-light process (PPL) and might bypass some of the self-defense mechanisms. This affects all components that use WMI, e.g., AVGSvc.exe 19.6.4546.0 and TuneupSmartScan.dll 19.1.884.0.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2157 records in the last 180 days details

References

2 references

URL	Tags
https://safebreach.com/blog	x_refsource_MISC
https://safebreach.com/Post/Avast-Antivirus-AVG-A…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T01:33:16.465Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://safebreach.com/blog"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-Abuses"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in Avast antivirus before 19.8 and AVG antivirus before 19.8. A DLL Preloading vulnerability allows an attacker to implant %WINDIR%\\system32\\wbemcomn.dll, which is loaded into a protected-light process (PPL) and might bypass some of the self-defense mechanisms. This affects all components that use WMI, e.g., AVGSvc.exe 19.6.4546.0 and TuneupSmartScan.dll 19.1.884.0."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2019-10-23T16:59:08.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://safebreach.com/blog"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-Abuses"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-17093",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An issue was discovered in Avast antivirus before 19.8 and AVG antivirus before 19.8. A DLL Preloading vulnerability allows an attacker to implant %WINDIR%\\system32\\wbemcomn.dll, which is loaded into a protected-light process (PPL) and might bypass some of the self-defense mechanisms. This affects all components that use WMI, e.g., AVGSvc.exe 19.6.4546.0 and TuneupSmartScan.dll 19.1.884.0."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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                {
                  "lang": "eng",
                  "value": "n/a"
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          ]
        },
        "references": {
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              "name": "https://safebreach.com/blog",
              "refsource": "MISC",
              "url": "https://safebreach.com/blog"
            },
            {
              "name": "https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-Abuses",
              "refsource": "MISC",
              "url": "https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-Abuses"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-17093",
    "datePublished": "2019-10-23T16:59:08.000Z",
    "dateReserved": "2019-10-02T00:00:00.000Z",
    "dateUpdated": "2024-08-05T01:33:16.465Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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